Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 09-22-2008, 02:59 PM
Registered User
Join Date: Jun 2008
Location: Connecticut
Posts: 241
300SDL Clicking

My 87 300SDL makes a clicking i haven't noticed before when idling... It comes and goes... and is coming from the engine...

Anybody know what this is?
Reply With Quote
Old 09-22-2008, 03:12 PM
Registered Hack
Join Date: Mar 2008
Posts: 4,605
random clicking before reaching full operating temp is usually metal expanding.

continuous, repetitive, predictable clicking is mechanical and can be numerous things.

please be more descriptive

Reply With Quote
Old 09-22-2008, 03:15 PM
Registered User
Join Date: Jun 2008
Location: Connecticut
Posts: 241
Draining the car on my five minute ride to school, stop and am idling for a few mins turning off the radio etc...

clicking starts and sounds to be in-sync with engines normal chatter..
Reply With Quote
Old 09-22-2008, 04:12 PM
babymog's Avatar
Loose Cannon - No Balls
Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,767
On some, it is the lifters telling you it's time for an oil change.

Gone to the dark side

- Jeff
Reply With Quote
Old 09-22-2008, 06:28 PM
Hatterasguy's Avatar
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,267
Its the lifters. Try some synthetic that usualy helps them.
2017 Chevy Silverado 1500 LTZ

"No free man shall ever be debarred the use of arms. The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."
-Thomas Jefferson
Reply With Quote
Old 09-22-2008, 07:12 PM
dieseldiehard's Avatar
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,086
Probably the lifters but put an ear up near the Vacuum pump to see if thats the source of the noise. Which raises the question, have you upgraded to the late style vac pump yet?
'99 E320 latest car. '95 E320 Wagon my favorite road car. '99 E300D, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine.
Reply With Quote
Old 09-22-2008, 08:38 PM
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
The lifters are best characterized as "ticking".

They can be very pronounced if you listen at the back of the wheel wells.

Sometimes synthetic oil (Mobil 1) can clear it up over 10K miles or so.

Sometimes not..........
Reply With Quote
Old 09-22-2008, 11:49 PM
2.5Turbo's Avatar
602 648 113 A630
Join Date: Feb 2006
Location: Tacoma, WA
Posts: 900
8k miles of M1 fixed all but two of mine. 15 years of being driven by a little old lady (my grandma ) must have gunked those two up beyond the magic of M1. You should have seen the ALDA fitting on the manifold before I first cleaned it out

It was on the project list to replace them this summer, but I never got motivated to buy the parts and before I knew it it was August and time to head back to school

1990 300D 2.5 Turbo -155k
2000 E430 - 103k
2014 Jeep Grand Cherokee Ecodiesel 4x4 - 11k
2014 VW Passat TDI SE - 7k Bro's Diesel
2006 E320 CDI - 128k Pop's Benz

Pre-glow - A moment of silence in honor of Rudolph Diesel
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 08:21 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page